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Multichannel LSTM-CRF for Named Entity Recognition in Chinese Social Media

  • Chuanhai DongEmail author
  • Huijia Wu
  • Jiajun Zhang
  • Chengqing Zong
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10565)

Abstract

Named Entity Recognition (NER) is a tough task in Chinese social media due to a large portion of informal writings. Existing research uses only limited in-domain annotated data and achieves low performance. In this paper, we utilize both limited in-domain data and enough out-of-domain data using a domain adaptation method. We propose a multichannel LSTM-CRF model that employs different channels to capture general patterns, in-domain patterns and out-of-domain patterns in Chinese social media. The extensive experiments show that our model yields 9.8% improvement over previous state-of-the-art methods. We further find that a shared embedding layer is important and randomly initialized embeddings are better than the pretrained ones.

Keywords

Multichannel Named entity recognition Chinese social media 

Notes

Acknowledgments

The research work has been supported by the Natural Science Foundation of China under Grant No. 61403379 and No. 61402478.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Chuanhai Dong
    • 1
    • 2
    Email author
  • Huijia Wu
    • 1
    • 2
  • Jiajun Zhang
    • 1
    • 2
  • Chengqing Zong
    • 1
    • 2
    • 3
  1. 1.CASIANational Laboratory of Pattern RecognitionBeijingChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.CAS Center for Excellence in Brain Science and Intelligence TechnologyShanghaiChina

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